Noise suppresor for firearms

ABSTRACT

The present invention relates to a noise suppressor for firearms comprising a main tubular body, a retractable muzzle booster provided within the main tubular body, a retracting means configured with the muzzle booster, an expanding chamber provided within the main tubular body, a wire mesh provided on the surface of the expanding chamber, a wipes and spacers means disposed between the expanding chamber and the front portion of the main tubular body, and an end cap secured to the front end portion of the main tubular body. The herein constructional feature of the noise suppressor effectively and tremendously reduces the sound level from the standard sound level of “160 decibels” to approximately “80 decibels.”

CROSS-REFERENCE TO RELATED APPLICATION

The present disclosure claims priority to Philippine Utility ModelRegistration No. 22019000133, filed with the Intellectual PropertyOffice of the Philippines on 6 Feb. 2019, titled “A NOISE SUPPRESSOR FORFIREARMS” the entire contents of which are incorporated herein byreference and for all purposes.

TECHNICAL FIELD

The present invention relates in general to firearms, but moreparticularly to a noise suppressor for firearms with locked breech gunbarrels.

BACKGROUND OF THE INVENTION

Heretofore, existing noise suppressors for firearms with locked breechgun barrels produce firing volumes or noise volume levels during firingoperations or shooting exercises that approximate or do not meet theaccepted and tolerable noise level of “90 decibels” for noisesuppressors. Although most of these noise suppressors are constructedwith numerous components, they still do not address to meet the acceptednoise level or attempt to lower the noise volume of “140 decibels.”

SUMMARY OF THE INVENTION

The present invention seeks to solve the problems and disadvantages ofexisting noise suppressors for firearms by providing noise suppressorthat can effectively lower the noise volume during firing from “160decibels” to approximately “80 decibels” or about 50% or more lower thanthe accepted standard noise level.

More particularly, to attain the desired lower decibel of “80 decibels”,the noise suppressor for firearms of the present invention includes: (a)a main tubular body having a main bore and an internally threaded frontand rear end portions; (b) a retractable muzzle booster provided withinthe rear portion of the main tubular body, the retractable muzzlebooster being defined by a first tubular body having a first bore, afront end portion and an internally threaded rear end portion, the frontend portion being defined by an externally threaded first peripheralflange; (c) a retracting means being operationally configured with themuzzle booster; (d) an expanding chamber provided within the middleportion of the main tubular body and operationally configured with theretractable muzzle booster, the expanding chamber being defined by asecond tubular body having a second bore in direct communication withthe first bore and a stepped rear section extending to a diametricallyreduced front section, the stepped rear section having a secondperipheral flange and the diametrically reduced front section having athird peripheral flange, the second tubular body being provided with aplurality of first and second holes and the second peripheral flangebeing provided with a plurality of third holes; (e) a wire mesh beingprovided on the surface of the reduced front section of said secondtubular body; (f) a wipes means comprising a pair of rubber compositematerial with slightly undersized bore diameter of the actual caliber todecrease the velocity of the ammunition as it passes through to make itsubsonic and travels at not more than 1,100f/s (foot per second) soundbarrier and spacer metal ring (alloy) that separate the set of wipes andalso serves as compartments to escaping gas; and (g) an end cap beingsecured to the front end portion of the main tubular body, the end caphaving a hole in direct communication with the first bore and secondbore third and fourth bore.

Another object of the present invention is to provide a noise suppressorfor firearms that is easy to use and is maintenance-free.

Still, another object of the present invention is to provide a noisesuppressor for firearms that is easy to manufacture using locallyavailable materials and technology with optional for upgrade ofmaterials to Inconel or titanium instead of aluminum.

These and other objects and advantages of the present invention willbecome more apparent upon a reading of the ensuing detailed descriptiontaken in conjunction with the appended drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a perspective view of a noise suppressor for firearms inaccordance with the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1 showing thenoise suppressor in normal position;

FIG. 2a is a sectional view of the noise suppressor in retractedposition after the firearms have been fired;

FIG. 3 is an exploded view showing in detail the retractable muzzlebooster of the noise suppressor for firearms in accordance with thepresent invention; and

FIG. 4 is an exploded view showing in detail the expanding chamber ofthe noise suppressor for firearms in accordance with the presentinvention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Before describing the present invention in detail, it is to beunderstood that the phraseologies and terminologies used herein are tobe used for description and should not be regarded as limiting.

Referring now to the different views of the appended drawings, whereinlike reference numerals designate the components or elements throughoutthe ensuing enabling description, there is shown the present inventionfor A NOISE SUPPRESSOR FOR FIREARMS designated as 10.

Referring now to FIGS. 1, 2, 2A 3, 4, and 5 of the drawings, the noisesuppressor for firearms 10 includes a main tubular body 11 having a mainbore 12 and an internally threaded front portion 13 and rear end portion14, a retractable muzzle booster 15 provided within the rear end portion14 of the main tubular body 11, a retracting means “M” beingoperationally configured with the muzzle booster 15, an expandingchamber 16 provided within the middle portion of the main tubular body11 and operationally configured with the retractable muzzle booster 15,a wipes means “B” provided within the main tubular body 11 and disposedbetween the expanding chamber 16 and the front portion 13 of the maintubular body 11. The wipes means “B” comprises of a pair of rubbercomposite materials 17 and a spacer 18 arranged alternately in sets. Andan end cap 19 engageably secured to the front end portion 13 of the maintubular body 11 to close the noise suppressor 10.

As shown in FIGS. 2 and 3 of the appended drawings, the retractablemuzzle booster 15 is defined by a first tubular body 20 having a firstbore 21, a front end portion 22 and an internally threaded rear endportion 23. As shown in FIG. 4, the front end portion 22 of theretractable muzzle booster 15 has an externally threaded firstperipheral flange 24 wherein the front surface of the first peripheralflange 24 is formed with a space defined by a circumferentialfunnel-like indention 25 extending from the periphery 24 a of the firstperipheral flange 24 towards the first bore 21 at the central portionthereof. As further shown in FIG. 4, the expanding chamber 16 is definedby a second tubular body 26 having a second bore 27 disposed in directcommunication with the first bore 21 of the first tubular body 20 and astepped rear section 28 extending to a diametrically reduced frontsection 29. The stepped rear section 28 having a second peripheralflange 30 and the diametrically reduced front section 29 having a thirdperipheral flange 31. The second tubular body 26, more particularly, thestepped rear section 28 is provided with spaced apart first holes 28 aand the diametrically reduced front section 29 is provided with spacedapart second holes 29 a. The second peripheral flange 30 is alsoprovided with a plurality of third holes 30 a. The first holes 28 a ofthe stepped rear section 28 are larger in diameter than the second holes29 a of the diametrically reduced front section 29 and the third holes30 a of the second peripheral flange 30. A wire mesh 32 is provided andwrapped around the surface of the diametrically reduced front section 29of the second tubular body 26. The wire mesh 32 is provided to aid incooling the hot gases as a result from the firing of the firearms “F”.

Referring again to FIGS. 2 and 4 of the appended drawings, the pair ofrubber composite materials 17 and a ring spacer 18 is arrangedalternately in sets from the expanding chamber 16 and terminating to thefront end portion 13 of the main tubular body 11. The wipes means “B”includes a set of pair of rubber composite materials 17 and a ringspacer 18. More particularly, the set of pair of rubber compositematerials 17 and a ring spacer 18 are arranged alternately in setsstarting from the third peripheral flange 31 of the diametricallyreduced front section 29 of the second tubular body 26 up to the frontend portion 13 of the main tubular body 11. The rubber compositematerials 17 having a third bore 33 and the ring extender 18 having afourth bore 34, the third bore 33 and fourth bore 34 are disposed indirect communication with the first bore 21 and second bore 27. Asfurther shown in FIG. 4, the third bore 33 of the rubber compositematerials 17 is made smaller in diameter than the diameters of the firstbore 21 of the retractable muzzle booster 15, the second bore 27 of theexpanding chamber 16 and fourth bore 34 of the ring spacer 18.Preferably, the third bore 33 of the rubber composite materials 17 ismade of flexible material or rubber material and has a slightly smallerdiameter than the bullet to retard the motion of the same and aid in thereducing the noise during firing and the ring spacer is preferably madeof metal material. As further shown in FIG. 2, the end cap 19 is securedto the front end portion 13 of the main tubular body 11. The end cap 19is defined by a head portion 19 a and pair of externally threaded legs19 b adapted to be engageably secured to the internally threaded frontend portion 13 of the main tubular body 11. The end cap 19 furtherhaving a central hole 19 c disposed in direct communication with thefirst bore 21 of the retractable muzzle booster 15, the second bore 27of the expanding chamber 16, third bore 33 of the rubber compositematerials 17 and fourth bore 34 of the ring spacer 18. Preferably, thepair of rubber composite materials 17 are the last to be disposedadjacent to the leg 19 b of the end cap 19.

Referring again to FIGS. 2 and 3 of the appended drawings, theretracting means “M” includes a housing 35 with a rear end portion 36having a fourth peripheral flange 37 and an externally threaded sidewall38. The retracting means “M” further includes a coil spring 39 providedalong the inner surface of the externally threaded sidewall 38 and isheld simultaneously on the surface of the first tubular body 20 of themuzzle booster 15 and a spring coil retainer surface 40 which is anextended lower portion of the fourth peripheral flange 37 of the housing35. The spring coil 39 is adapted to actuate the muzzle booster 15 in aretracting and releasing manner from the second peripheral flange 30 ofthe stepped rear section 28 of the expanding chamber 15 to the gunbarrel “G”, respectively, when the firearms “F” is fired.

In operation, the noise suppressor 10 is first engaged and secured tothe front of the gun barrel “G” of the firearms “F” by engaging theinternally threaded rear end portion 23 of the muzzle booster 15 to thecorresponding threads of the gun barrel “G” of firearms “F” as shown inFIG. 2. When the firearms “F” is fired, the muzzle booster 15 willinstantaneously retract to a position “X” by means of coil spring 39 andthe retracing movement of the gun barrel “G” as shown in FIG. 2a and aspace “S” is formed between the externally threaded first peripheralflange 24 of the muzzle booster 15 and the second peripheral flange 30of the expanding chamber 16 as the bullet passes through the first bore21 of the retractable muzzle booster 15, the second bore 27 of theexpanding chamber 16, third bore 33 of the rubber composite materials17, fourth bore 34 of the ring spacer 18 and will exit on the centralhole 19 c of the end cap 19. After firing, the muzzle booster 15 willreturn to its original position as shown in FIG. 2. The hot gases formedby the blast is momentarily retained in the space defined by acircumferential funnel-like indention 25 extending from the periphery 24a of the first peripheral flange 24 towards the first bore 21 at thecentral portion of the front face of the first peripheral flange 24.Upon the return of the muzzle booster 15 to its original position afterfiring as shown in FIG. 2, the hot gases resulting from the blast ismomentarily retained in the space formed by the circumferentialfunnel-like indention 25 and then transferred to the expanding chamber16. The hot gasses passes from the spaced apart third holes 30 a of thesecond peripheral flange 30 and through the spaced apart first holes 28a of the stepped rear section 28 and into the wire mesh 32. The wiresmesh 32 functions to cool the hot gases and the cooled gases aresubsequently released to the wipes means “B” which includes series ofthe arranged sets of pair of rubber composite materials 17 and a ringspacer 18 and to the sidewalls of the main tubular body 11 through thesecond bore 27 and the spaced apart second holes 29 a of thediametrically reduced front section 29, respectively. The hereinconstruction of the noise suppressor 10 of present invention effectivelyand tremendously reduces the sound level of the firing volume duringfiring operations or firing exercises from the standard noise level of“160 decibels” to approximately “80 decibels.”

Additional advantages and modifications of the present invention willreadily occur to those skilled in the art in view of these teachings.The present invention in its broader aspects is not limited to thespecific details, representative contrivances, and illustrative examplesshown and described herein. Accordingly, various modifications may bemade without departing from the spirit and scope of the general conceptas defined in the appended claims and their equivalents.

1. A noise suppressor for firearms comprising: a main tubular bodyhaving a main bore and an internally threaded front and rear endportions; a retractable muzzle booster provided within the rear portionof said main tubular body, said retractable muzzle booster being definedby a first tubular body having a first bore, a front end portion and aninternally threaded rear end portion, said front end portion beingdefined by an externally threaded first peripheral flange; a retractingmeans being operationally configured with said muzzle booster; anexpanding chamber provided within the middle portion of said maintubular body and operationally configured with said retractable muzzlebooster, said expanding chamber being defined by a second tubular bodyhaving a second bore in direct communication with said first bore and astepped rear section extending to a diametrically reduced front section,said stepped rear section having a second peripheral flange and saiddiametrically reduced front section having a third peripheral flange,said second tubular body being provided with a plurality of first andsecond holes and said second peripheral flange being provided with aplurality of third holes; a wire mesh being provided on the surface ofsaid reduced front section of said second tubular body; a wipes meansprovided within said main tubular body and disposed between saidexpanding chamber and said front portion of said main tubular body; andan end cap being secured to the front end portion of said main tubularbody, said end cap having a hole in direct communication with said firstbore and second bore third and fourth bore.
 2. A noise suppressoraccording to claim 1, wherein said retracting means comprising a housingwith a rear end portion having a fourth peripheral flange, an externallythreaded sidewall, and a coil spring provided along the inner surface ofsaid sidewall adapted to actuate said muzzle booster in a retractingmanner with respect to the gun barrel.
 3. A noise suppressor accordingto claim 1, wherein said wipes means comprising set of pair of rubbercomposite materials and a ring spacer arranged alternately in sets fromthe third peripheral flange of said diametrically reduced front sectionof the second tubular body up to the front end portion of said maintubular body, said rubber composite materials having a third bore andsaid ring spacer having a fourth bore, said third and fourth bores beingin direct communication with said first and second bores.
 4. A noisesuppressor according to claim 2, wherein said wipes means comprising setof pair of rubber composite materials and a ring spacer arrangedalternately in sets from the third peripheral flange of saiddiametrically reduced front section of the second tubular body up to thefront end portion of said main tubular body, said rubber compositematerials having a third bore and said ring spacer having a fourth bore,said third and fourth bores being in direct communication with saidfirst and second bores.
 5. A noise suppressor according to claim 4,wherein the front surface of said first peripheral flange of the muzzlebooster is formed with a space defined by a circumferential funnel-likeindention extending from the periphery of said first peripheral flangetowards said first bore at the central portion thereof.
 6. A noisesuppressor according to claim 5, wherein the bore said rubber compositematerials is smaller than the bores of said retractable muzzle booster,expanding chamber and ring spacer.
 7. A noise suppressor according toclaim 6, wherein said ring spacer is made of steel material.
 8. A noisesuppressor according to claim 6, wherein said rubber composite materialsare made of flexible material.